JPH031282U

JPH031282U -

Info

Publication number: JPH031282U
Application number: JP1989062094U
Authority: JP
Priority date: 1989-05-29
Filing date: 1989-05-29
Publication date: 1991-01-09

Description

[Brief explanation of drawings]

第１図は本考案に係るパツキング構造を採用し
たプランジヤポンプの要部を一部切欠いて示す側
面図、第２図は本考案に係るパツキング構造を示
す要部分解斜視図、第３図ａ，ｂは第１図に示す
パツキング構造の作用を示す説明図、第４図は従
来技術に係るプランジヤポンプの要部を一部切欠
いて示す側面図、第５図ａ，ｂは従来技術に係る
パツキング構造の作用を示す説明図である。１４……プランジヤ、１６……シリンダ室、１
８……パツキング、２２……中間リング、３６…
…環状空隙、３８……補助リング。 Fig. 1 is a partially cutaway side view showing the main parts of a plunger pump employing the packing structure according to the present invention, Fig. 2 is an exploded perspective view of the main parts showing the packing structure according to the present invention, Fig. 3a, b is an explanatory diagram showing the action of the packing structure shown in Fig. 1, Fig. 4 is a side view showing a partially cut away main part of a plunger pump according to the prior art, and Figs. 5 a and b are packing structures according to the prior art. FIG. 3 is an explanatory diagram showing the effect of the structure. 14...Plunger, 16...Cylinder chamber, 1
8...Packing, 22...Intermediate ring, 36...
...Annular cavity, 38...Auxiliary ring.

Claims

[Claims for Utility Model Registration] A ring-shaped packing 18 provided around the inner peripheral surface of the cylinder chamber 16 is restricted from moving in the axial direction by a regulating member 22, and the plunger 14 is held watertight by the inner peripheral surface of the packing 18. In the plunger pump configured to be slidably inserted and supported, the outer peripheral surface of the packing 18 and the cylinder chamber 1
A packing structure for a plunger pump characterized in that an auxiliary ring 38 for preventing deformation of the packing 18 is tightly fitted into an annular gap 36 defined by the inner wall surface of the packing 18 and the regulating member 22.